Yap, Y. C. (2006). A study on the use of C.A.L.L materials to teach literature in the ELS Classroom in a Malaysian school. Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yap, Yoke Chin. A Study on the Use of C.A.L.L Materials to Teach Literature in the ELS Classroom in a Malaysian School. Bangi: Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Yap, Yoke Chin. A Study on the Use of C.A.L.L Materials to Teach Literature in the ELS Classroom in a Malaysian School. Fakulti Sains Sosial Dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2006.
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